Logging-bunk.



H. E. DOERR.

LOGGING BUNK.

APPLIGATION FILED AUG. 1. 1914.

1,1 17,171. Patented Nov.17,1914

In f f THEN/)12ms PETERS co., PHOTO-urna. WASHINGTON, D. cA

UNITED sTA'rEs PATENT ortica.

HARRY E. DOERR, OF LOUIS, MISSOURI, ASSIGNOR'TO SGULLIN-GALLAGI-IER IRON` & STEEL COMPANY, ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI. y

LOGGING-BUNK Specification of Letters Patent.

Patented Nov. 17, 1914.

Application aieavaugust 1, 1914. serialnassasl.

T0 all whom it may concern:

Be it known that I, HARRY E. Donna, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Logging- Biuiks, of which the following' is a full, clear, and exact description, such as will enable others `skilled in the art to which it appertains to make and use the same.

' This invention relates to bunks for logging cars, and has forits main object to provide a bunk which is so designed that the release rods for the end stake locking devices are normally in a neutral position, thereby making it practicable to use comparativelyv light-weight release rods, owing to the fact that there is no tendency for said rods to bend or buckle.

Another object is to provide a strong and serviceable logging bunk that can be manufactured at a lowcost, and which comprises few parts of simple design that are not apt to break or get out of order when the bunk is in use.

Other objects and desirable features of my invention will be hereinafter pointed out.

Figure 1 is an end elevational view of a 'flat car equipped with logging bunks constructed in accordance with my invention. Fig. 2 is a side elevational viewy of the bunk partly in vertical section. Fig. 3 isa top plan view of the bunk partly in horizontal section taken on the line 3 3 of Fig. 2. Fig. 4' is an end elevational view of the bunk; and Fig. 5 is a vertical cross-sectional view taken on the line 5-5 of Fig. 2.

Briefly stated, my invention consists in a logging bunk provided adjacent its ends with pivotally mounted stakes that are `normally held in an upright position by means of locking devices that bear directly against the lower ends of the stakes in such a manner that they take up all the strains exerted on the stakes when the bunk is in use. Said locking devices are moved into inoperative position so as to release the stakes by means of release rods that extend longitudinally of the bunk, and said rods, locking devices and stakes are so combined that the release rods are normally in a neutral position, namely, not' undertension or compression, and are in tension only when the stake locking devices are being tripped, thereby making it practicable to use much lighter release rods than trate thepreferred form of my, invention, A f

designates a logging bunk ofI substantially inverted channel-shape incross section and provided at its lower side with laterally` projecting flanges l for attaching it to the car, the bunk herein shown being adapted to be mounted on a at car B. Adjacent the ends of the bunk are pivotally mounted stakes Cy that project upwardly above the top face of the bunk, each of said, stakes being oscillatingly mounted on a pivot pin 2 that extendstransversely through the bunk, and which is supported by the side walls of the bunk, as shown in Fig. 3. At the lower end of each stake is a [concaved surface or arc-shapedportion 3 against which a locking device D bears when the stake is in an upright or operative position, as shown at the left hand end of Fig.. 2. Said locking device D is arranged inside of the bunk and it is oscillatingly mounted on a transverse pivot pin ,4. that is supported by the side walls of the bunk, ysaid locking device preferably consisting of a convexed segmentalshaped member carried by a hub portion 5 through whichthe pivot pin 4c passes. At one end of the hub 5' is a depending arm 6 to which a release rod 7 is pivotally connected,

said rod extending longitudinally ofthe bunk on the inside of same, and having its opposite end pivotally connected to an` actuating lever 8. Atv the opposite ends of the bunk A the top web of same is cut away, as

shownat the right hand end of Fig. 3, so as to provide spaces in which the stakes :C can travel when they areV raised and lowered. The `actuating levers 8 for the release rods are also arranged in these spaces, as `shown in Fig. 3, and said levers are` pivotally conk- Y nected tol the side walls of the bunk byv means of pivot pins 9. Any' suitable means may be employed'for retaining the actuating levers 8,the means herein shown for this purpose consisting of pivotally mounted latches 10 carried by the side walls of the bunkand provided `with openings through which the upper ends of the actuating levers 8 project, as shown in broken lines in Fig. 2 and in full lines in Fig. 3. ,The levers 8 lie at one side of the stakes C, as shown in Fig. 3, so that they can be operated conveniently and each lever is arranged at the opposite end of the bunk from the particular stake with which it cooperates, thus permitting the stake C to he released from the opposite side of the car irom which the logs are discharged.

1 prefer to form the stakes C substanti ally channel-shape in cross section andl provide each stake with` an integral hub portion through which the pivot pin 2 Jfor the stake passes, and, in order to reduce the shearing strains on the pivot pins 2 for the stakes and on the pivot pins et ior the locking devices D, li have provided the side walls of the hunk with i "ardly projecting ribs or abutments 12 an( 13 of arc shape in outline that bear against the huh portions 11 and ot the stakes and locking devices, rew spectively, and thus take up the strains ex erted on the stakes C when the bunk is in use.

When the locking devices D are in engagement with the lower ends of the stakes C, said stakes will he securely locked in an upright position, owing to the fact that any tendency for the stakes to swing. downwardly will cause the conoaved portions 3 at the lower ends of same to be ammed tightly against the convened portions of the locking devices D, the convened portions of said locking devices being preferably formed slightly eccentric with relation to said pivot pins l about which said locking devices turn, so as to permit said devices to be released easily or disengaged Yfrom the concaved s irfaces 3 at the lower ends of the stakes with which they coperate. The cooperating or concaved surfaces and convexed portions on the stakes and on the locking devices C, re spectively, are so proportioned that the lockdevices D cannot swing upwardly far enough to release the stakes, but they are prei'erably so proportioned. that when the bunk is in use the strains which tend to move the stakes outwardly and downwardly will he transmitted directly to the locking devices D in a straifffht line with the pivot pins 2 and thereby causing stra-ins to be applied to the arc-shaped ribs or abutments 12 and 13 on the side walls ot the bunk that embrace the hub portions on the stake and on the locking devices D,respectively. llihen it is desired to release the stakes C at one side of the carnthe latch or retaining' device 10 that cooperates with the actuating lever 8 for said stake is disengaged from said lever and the lever is moved downwardly, as shown at the right hand` end oi' Fig. 2, so as to trip the locking device D or move it out., of engagement with the concaved portion 3 at the lower end of the stake, as shown in broken` lines in Fig. Q, the channelshaped cross-sectional form of the stake permitting it to swing downwardly over the locking device. The release rods 7 are never in compression and practically the only time when they are in tension is when the locking devices D are being tripped, consequently, it is practicable to use comparatively lightweight release rods, thereby materially reducing the cost ot the bunk, as well as producing a bunk of less weight than those heretotore in general use in which it is necessary to use heavy release rods, owing to the fact that they are in compression when the bunk is in use.

The body portion ot the bunk, the end stakes and the locking devices D are formed from cast metal, and therefore the bunk can be manufactured at a low cost, and as the complete bunk comprises only a few parts of simple design, there is little liability 0I" the parts oit the hunk breaking` or getting out of adjustment when the bunk is in use.

Having thus described my invention, what 1 claim isz.

1. A logging bunk provided with a rockable stake, a rockable locking device that bears against said stake and retains it in an upright position, and means on the side walls ot the bunk for taking up the strains which said stake and locking device are subjected to when the bunk is in service.

2v. 'A logging bunk provided with a rockable stake, a rockable locking device that bears against said stake and retains it in an upright position, and arc-shaped ribs or abutments on the side walls of the hunk that partially surround hub portions on said stake and locking device, and thus take up the strains to which. said members are subjected when the bunk is in service.

3. A logging bunk provided with a pivotv ally mountedy stake, a pivotally mounted locking device that is adapted to engage said stake and hold it in an upright position, the pivot pins for said stake and device passing through the side walls ot the bunk, and means for reducing the shearing strains on said pivot pins when the bunk is in service.

d. A logging bunk provided with a pivotally mounted stake, a pivotally mounted locking devices for said stake arranged in such a manner that the strains exerted on the stake will be transmitted to said locking device in an approximately straight line passing through the pivots of said members, and abutments on the side walls of the bunk for taking up the strains to which said stake and locking device are subjected when the bunk is in service.

5. A logging bunk provided with a rockabl'e end stake that has a concaved portion adjacent the lower end of same, and a rockable locking device having a conveXed portion that is adapted to enter the concaved portion of said stakey and retain it in an upright position, the conveXed portion of said locking device being eccentric with relation to the axis about which said device turns.

6. A logging bunk provided with a pivotally moimted end stake that has a concaved portion adjacent the lower end of same, a rookable locking device having` a convexed portion that is eccentric with respeot to said concaved portion and which isadapted to enter said concaved portion of the stake and retain the stake in an upright position, a release rod connected to said locking device and extending longitudinally of the bunk, and a lever adjacent one end of the bunk for actuating said release rod.

7. A logging bunk provided with a pivotally mounted end stake that has a concaved portion adjacent the lower end of same, a rockable locking device .having a convexed portion that is adapted toenter the concaved' portion of said stake and retain the stake in an upright position, a release rod connected to said locking device and extending longitudinally of the bunk, a lever adjacent one end of the bunk for actuating said release rod, and a catch or retainingv member coperating with said lever.

S. A logging bunk provided with a piv otally mounted end stake having a hub portion through which the pivot pin of the stake passes, a pivotally mounted locking device having a hub portion through which its pivot pinpasses, one of said members having a convexed portion that is adapted to enter a concaved portion on the other member, and a release rod pivotally connected to an arm on the hub portion of said locking device.

9. A logging bunk provided with a pivotally mounted end stake having a hub portion through which the pivot pin of the stake passes, a pivotally mounted locking device having a hub portion through which the pivot pin passes, one of said members having a convexed portion that is adapted to enter a concaved portion on the other member, a release rod pivotally connected to an arm on the hub portion of said locking device, and arc-shaped ribs or abutments on the side walls of the bunk that partially surround the hub portions of said stake and locking device.

10. A logging bunk provided with a pivotally mounted end stake having a hub 'por-A tion through which the pivot pin of the stake passes, a pivotally mounted locking device having a hub portion `through which the pivot pin passes, one of said members having a convexedportion that is adapted to enter a concaved portion on the other member, a release rod pivotally connected to an arm on the hub portion of said locking device, arc-shaped ribs or abutments on the side walls of the bunk that partially surround the hub portions of said stake and locking device, and an actuating lever at the end of the bunk towhich said release rod is connected. i d i 11. A logging bunk having a body p0rtion of substantially inverted channel-shape in cross section, a pivotally mounted end stake having a hub portion arranged inside of the bunk and extending transversely between the side walls of` same, a pivotally mounted locking device arranged inside of the bunk below the lower end of said stake, and having a portion that is adapted to be jammed tightly against the lower end of the stake when the stake is in an upright or operative position, and means located at the opposite end of the bunk for disengaging said locking device from said stake.

12. A logging bunk having a body portion of substantially inverted channel-shape in cross section whose web is` removed'at the ends of the bunk, pivotally mounted stakes at the ends of the bunk carried by the side walls of the bunk and each provided at itsA lower end with a concaved portion, pivotally mounted lockingdevices arranged inside of the bunk and carried by the side walls therey of, segmental-shaped portions on'said locking devices that enter the concaved portions in the stakes when they are in an upright position, release rods connected to said locking devices and extending longitudinally of the bunk, and levers at the ends of the bunk for actuatingsaid release rods.

In testimony whereof I hereunto aiiix my signature in the presence of two witnesses, this 28th day of July 1914.

HARRY E. DOERR.

e vWitnesses: HARRY Dnnross, M. L. JoNEs.

Copies of this patent may be obtained for` ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

